Flow return pipes under passive raft or through walls
We are doing groundwork for a passive raft and the walls will be ICF. ASHP will be located outside the pantry window area) which is about 5/6m from the plant room. Opinions on how to install the flow/return pipe please?
Option 1 - pre-insulated twin pipe under the raft insulation but with a 90 degree fixing to get the pipe up to the plant room or
Option 2 - through the walls.
Many thanks
This thread here might be useful.
The forum creates some challenges because it is difficult to know sometimes where a topic might fit. Discussion about insulated twin pipe, not many opinions on this at the time.
This discussion also covers pipe sizing.
